1 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 * Use of this source code is governed by a BSD-style license that can be
3 * found in the LICENSE file. */
5 #ifndef LIBRARIES_NACL_IO_NACL_IO_H_
6 #define LIBRARIES_NACL_IO_NACL_IO_H_
8 #include <ppapi/c/pp_instance.h>
9 #include <ppapi/c/ppb.h>
11 #include "sdk_util/macros.h"
18 * NOTE: If you initialize nacl_io with this constructor, you cannot
19 * use any mounts that require PPAPI; e.g. persistent storage, etc.
24 * Initialize nacl_io with PPAPI support.
27 * PP_Instance instance;
28 * PPB_GetInterface get_interface;
29 * nacl_io_init(instance, get_interface);
31 * If you are using the PPAPI C interface:
32 * |instance| is passed to your instance in the DidCreate function.
33 * |get_interface| is passed to your module in the PPP_InitializeModule
36 * If you are using the PPAPI C++ interface:
37 * |instance| can be retrieved via the pp::Instance::pp_instance() method.
38 * |get_interface| can be retrieved via
39 * pp::Module::Get()->get_browser_interface()
41 void nacl_io_init_ppapi(PP_Instance instance,
42 PPB_GetInterface get_interface);
46 * Mount a new filesystem type.
48 * This function is declared in <sys/mount.h>, but we document it here
49 * because nacl_io is controlled primarily through mount(2)/umount(2).
51 * Some parameters are dependent on the filesystem type being mounted.
53 * The |data| parameter, if used, is always parsed as a string of comma
54 * separated key-value pairs:
55 * e.g. "key1=param1,key2=param2"
59 * "memfs": An in-memory filesystem.
63 * "dev": A filesystem with various utility nodes. Some examples:
64 * "null": equivalent to /dev/null.
65 * "zero": equivalent to /dev/zero.
66 * "urandom": equivalent to /dev/urandom.
67 * "console[0-3]": logs to the JavaScript console with varying log
69 * "tty": Posts a message to JavaScript, which will send a "message"
70 * event from this module's embed element.
74 * "html5fs": A filesystem that uses PPAPI FileSystem interface, which can be
75 * read in JavaScript via the HTML5 FileSystem API. This mount
76 * provides the use of persistent storage. Please read the
77 * documentation in ppapi/c/ppb_file_system.h for more information.
79 * data: A string of parameters:
80 * "type": Which type of filesystem to mount. Valid values are
81 * "PERSISTENT" and "TEMPORARY". The default is "PERSISTENT".
82 * "expected_size": The expected file-system size. Note that this does
83 * not request quota -- you must do that from JavaScript.
85 * "httpfs": A filesystem that reads from a URL via HTTP.
86 * source: The root URL to read from. All paths read from this filesystem
87 * will be appended to this root.
88 * e.g. If source == "http://example.com/path", reading from
89 * "foo/bar.txt" will attempt to read from the URL
90 * "http://example.com/path/foo/bar.txt".
91 * data: A string of parameters:
92 * "allow_cross_origin_requests": If "true", then reads from this
93 * filesystem will follow the CORS standard for cross-origin requests.
94 * See http://www.w3.org/TR/access-control.
95 * "allow_credentials": If "true", credentials are sent with cross-origin
96 * requests. If false, no credentials are sent with the request and
97 * cookies are ignored in the response.
98 * All other key/value pairs are assumed to be headers to use with
101 * "passthroughfs": A filesystem that passes all requests through to the
102 * underlying NaCl calls. The primary use of this filesystem
103 * is to allow reading NMF resources.
108 * @param[in] source Depends on the filesystem type. See above.
109 * @param[in] target The absolute path to mount the filesystem.
110 * @param[in] filesystemtype The name of the filesystem type to mount. See
111 * above for examples.
112 * @param[in] mountflags Unused.
113 * @param[in] data Depends on the filesystem type. See above.
114 * @return 0 on success, -1 on failure (with errno set).
116 * int mount(const char* source, const char* target, const char* filesystemtype,
117 * unsigned long mountflags, const void *data) NOTHROW;
122 #endif /* LIBRARIES_NACL_IO_NACL_IO_H_ */